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东亚冬季风的变化与中国气温异常的关系
引用本文:郭其蕴.东亚冬季风的变化与中国气温异常的关系[J].应用气象学报,1994,5(2):218-225.
作者姓名:郭其蕴
作者单位:1.中国科学院地理研究所,国家计委地理研究所
基金项目:中科院KY85-102项目支持
摘    要:分析了近40年(1951—1990年)东亚冬季(12、1、2月)季风的变化及其与中国气温的关系。用两个指标定义冬季风:一个为IWS,表示冬季风的强度,另一个为IWE,表示冬季风向南扩展的程度。IWS的的主要周期为11.0年和2.2年,IWE的主要周期为7.3年和3.1年。IWS与全国气温的关系除西南高原地区外,均为明显负相关。IWE和全国气温的关系与IWS有所不同,高相关区沿东部和南部沿海及长江上游,形成U形分布。50年代IWS为正,IWE为负,所以我国北方偏冷,但U形带的气温则偏高。80年代相反,IWS

关 键 词:冬季风    气候变化    年际变化

Relationship Between the Variations of East Asian Winter Monsoon and Temperature Anomalies China
GuoQiyun.Relationship Between the Variations of East Asian Winter Monsoon and Temperature Anomalies China[J].Quarterly Journal of Applied Meteorology,1994,5(2):218-225.
Authors:GuoQiyun
Affiliation:1.(Institute of Geography, Chinese Academy of Sciences, Beijing 100101)
Abstract:The variations of East Asian winter monsoon during the last 40 years period (1951—1990) were studied, the relationship between winter monsoon activities and temperature anomalies in China was examined. The winter monsoon was characterized by two indices: IWS and IWE. IWS represents the intensity of winter monsoon. IWE reflects the extent of southward extension of winter monsoon along the eastern coast of Asian continent. The power spectrum analysis shows 11.0 a and 2.2 a periodicity in the variations of IWS, and 7.3 a and 3.1 a periodicity for IWE, respectively. IWS negatively correlates to the winter temperatures over China except in the south-west highland regions. IWE also negatively correlates with the winter tempertures in China, but significant correlations were concentrated in a region shaped like U capital, which begins from the eastern coast, goes to the south, then turns to the west and goes to the upper reaches of the Changjiang River. But IWE does not always vary parallely to the IWS. For example, the mean anomaly of IWS in 1950’s was positive, but negative for IWE. So, the temperatures were lower in North China, and higher in the U-shape region than the normal in 1950’s. On the contrary, in 1980’s the mean anomaly was negative for IWE, and positive for IWS. Therefore, the general warming covered the whole North China, but the temperatures were relatively low in the U-shape region.
Keywords:Winter monsoon  Climatic warming  Interannual variability  
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